TWO GIRLS SINGING by Iain Crichton Smith

It neither was the words nor yet the tune
Any tune would have done and any words.
Any listener at all.

As nightingales in rocks or a child crooning
in its own world of strange awakening
or larks for no reason but themselves.

So on the bus through late November running
by yellow lights tormented, darkness falling,
the two girls sang for miles and miles together

and it wasn't the words or the tune. It was the singing.
It was the human sweetness in that yellow,
the unpredicted voices of our kind.

(From Scottish Poem Book)